I recall dropping the Canadian Tube on Det in El Centro, the trainee Pathfinder asked how close he should stay to it. I suggested in case of a malfunction he stayed close enough to see it but far enough away to avoid trouble. Said tube descended from 18k on drogue only , and what had started as a 6 ft high solid object was reduced to a 4 in high pile of broken bits, kit inside didn't fare very well either! Left a substantial crater in the dz too.